Hello, this proposal mainly mean to the English Wikiquote and Japanese, where I'm active, but I'd like to hear opinions from more wider audience and write to this list. If you have a similar problem or rules already on your project, please let us share in this occasion.
My proposal is modification of Blocking policy with two new additional thoughts.
* Cross project vandalism * blocking based on CU investigation
Currently two projects have some similarity on those Blocking policy. The English version, Wikiquote:Blocking says
http://en.wikiquote.org/wiki/WQ:BP#Vandalism
Vandalism
Sysops may, at their judgement, block IP addresses that vandalise Wikiquote. For dynamic IPs, such blocks should last 24 hours. For static IPs, such blocks should initially last 24 hours, but repeat violators may be blocked for a maximum of one month; there are various rules of thumb that sysops follow in how much to extend the blocks of habitual vandals, none of which are formal policy. In general, casual vandals should be warned twice before being blocked, though warnings are not usually given for deliberate vandalism intended to discredit Wikiquote or serve an activist agenda. See dealing with vandalism for overall policy.
My proposals aim to let us take a proactive blocking for possible vandal IP addresses/accounts.
For cross project vandalism, my proposal is the addition as the below: If an IP address is detected vandalizing at least two Wikimedia projects, and it is likely this IP address will be used to vandalize the other project, sysops may block this IP address on their project. Also they have not to limit the blocking term within 24 hours, but may determine a reasonable duration.
As for CU investigation, currently the maximum length of blocking on English Wikiquote is one month, but I heard some sysops argue IP addresses determined as vandals may deserve much longer blocking. Personally I am inclining to this opinion. I therefore propose to add a new clause about CU investigation, as following:
IP addresses which are determined to be used for vandalism as a result of Checkuser investigation may be blocked up to X months, exceeding the normal limitation of one month.
The substitution of X could be arguable ... I think six months could be an opinion, but I am open to other opinions.
Cheers,